<section id="login">
  <h1>八点到官网管理系统</h1>
  <div class="contact-form">
    <input type="text" class="user" placeholder="用户名" ng-model="userName">
    <input type="password" class="pass" placeholder="密码" ng-model="password">
    <input type="button" value="登录" ng-show="userName && password" ng-click="load()">
  </div>
</section>